Revista Brasileira de Farmacognosia | |
Chemical composition and histochemistry of Sphagneticola trilobata essential oil | |
Cleber José Da Silva2  Luiz C. A. Barbosa2  Antonio J. Demuner2  Ricardo M. Montanari2  Dayana Francino1  Renata M. S. A. Meira1  Ana Olívia De Souza1  | |
[1] ,Universidade Federal de Viçosa Departamento de Química ,Brazil | |
关键词: essential oils; seasonal variation; secretory structures; Sphagneticola trilobata; | |
DOI : 10.1590/S0102-695X2012005000012 | |
来源: SciELO | |
【 摘 要 】
Anatomical and histochemical investigations of Sphagneticola trilobata (L.) Pruski, Asteraceae, secretory structures in leaves and stems and the seasonal variation of essential oils were carried out. Histochemical techniques enabled the specific location of the essential oil accumulation in the internal (canals) and external structures (trichomes). Histochemical analysis showed that the secretory trichomes produced steroids. The highest yield was obtained from plants collected in winter, when it was registered low temperature and precipitation. The essential oil was characterized by high percentage of hydrocarbon sesquiterpenes, hydrocarbon monoterpenes and low levels of oxygenated sesquiterpenes. The major components were germacrene D (11.9-35.8%), α-phellandrene (1.4-28.5%), α-pinene (7.3-23.8%), E-caryophyllene (4.6-19.0%), bicyclogermacrene (6.0-17.0%), limonene (1.8-15.1%) and α-humulene (4.0-11.6%). The percentage of most of the individual constituents present in S. trilobata essential oil changed significantly during the months.
【 授权许可】
CC BY-NC-ND
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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